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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1551171.pdf | 638 kB | Shaun Ewing | Aug 25, 1925 00:00 |
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US-1551171-A // Automatic telephone substation circuits // Powell Winfred T. // Stromberg Carlson Telephone | |||
| Version 1 (current) | 638 kB | Shaun Ewing | Aug 25, 1925 00:00 | US-1551171-A // Automatic telephone substation circuits // Powell Winfred T. // Stromberg Carlson Telephone | ||||
| PDF File 1551170.pdf | 907 kB | Shaun Ewing | Aug 25, 1925 00:00 |
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US-1551170-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone | |||
| Version 1 (current) | 907 kB | Shaun Ewing | Aug 25, 1925 00:00 | US-1551170-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone | ||||
| PDF File 1551169.pdf | 671 kB | Shaun Ewing | Aug 25, 1925 00:00 |
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US-1551169-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone | |||
| Version 1 (current) | 671 kB | Shaun Ewing | Aug 25, 1925 00:00 | US-1551169-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone | ||||
| PDF File 1545064.pdf | 1.92 MB | Shaun Ewing | Jul 07, 1925 00:00 |
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US-1545064-A // Telephone system // Powell Winfred T. // Stromberg Carlson Telephone | |||
| Version 1 (current) | 1.92 MB | Shaun Ewing | Jul 07, 1925 00:00 | US-1545064-A // Telephone system // Powell Winfred T. // Stromberg Carlson Telephone | ||||
| PDF File 1540421.pdf | 436 kB | Shaun Ewing | Jun 02, 1925 00:00 |
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US-1540421-A // Telephone circuits // Powell Winfred T. // Stromberg Carlson Telephone | |||
| Version 1 (current) | 436 kB | Shaun Ewing | Jun 02, 1925 00:00 | US-1540421-A // Telephone circuits // Powell Winfred T. // Stromberg Carlson Telephone | ||||
| PDF File 1540420.pdf | 1.26 MB | Shaun Ewing | Jun 02, 1925 00:00 |
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US-1540420-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone | |||
| Version 1 (current) | 1.26 MB | Shaun Ewing | Jun 02, 1925 00:00 | US-1540420-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone | ||||
| PDF File 1540419.pdf | 738 kB | Shaun Ewing | Jun 02, 1925 00:00 |
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US-1540419-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone | |||
| Version 1 (current) | 738 kB | Shaun Ewing | Jun 02, 1925 00:00 | US-1540419-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone | ||||
| PDF File 1540418.pdf | 1.59 MB | Shaun Ewing | Jun 02, 1925 00:00 |
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US-1540418-A // Automatic telephone trunking system // Powell Winfred T. // Stromberg Carlson Telephone | |||
| Version 1 (current) | 1.59 MB | Shaun Ewing | Jun 02, 1925 00:00 | US-1540418-A // Automatic telephone trunking system // Powell Winfred T. // Stromberg Carlson Telephone | ||||
| PDF File 1520909.pdf | 610 kB | Shaun Ewing | Dec 30, 1924 00:00 |
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US-1520909-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone | |||
| Version 1 (current) | 610 kB | Shaun Ewing | Dec 30, 1924 00:00 | US-1520909-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone | ||||
| PDF File 1519331.pdf | 850 kB | Shaun Ewing | Dec 16, 1924 00:00 |
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US-1519331-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone | |||
| Version 1 (current) | 850 kB | Shaun Ewing | Dec 16, 1924 00:00 | US-1519331-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone | ||||
| PDF File 1519330.pdf | 1.58 MB | Shaun Ewing | Dec 16, 1924 00:00 |
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US-1519330-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone | |||
| Version 1 (current) | 1.58 MB | Shaun Ewing | Dec 16, 1924 00:00 | US-1519330-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone | ||||
| PDF File 1519271.pdf | 2.14 MB | Shaun Ewing | Dec 16, 1924 00:00 |
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US-1519271-A // Telephony // Slough Frank M. // Stromberg Carlson Telephone | |||
| Version 1 (current) | 2.14 MB | Shaun Ewing | Dec 16, 1924 00:00 | US-1519271-A // Telephony // Slough Frank M. // Stromberg Carlson Telephone | ||||
| PDF File 1517382.pdf | 460 kB | Shaun Ewing | Dec 02, 1924 00:00 |
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US-1517382-A // Substation circuit // Powell Winfred T. // Stromberg Carlson Telephone | |||
| Version 1 (current) | 460 kB | Shaun Ewing | Dec 02, 1924 00:00 | US-1517382-A // Substation circuit // Powell Winfred T. // Stromberg Carlson Telephone | ||||
| PDF File 1515362.pdf | 1.27 MB | Shaun Ewing | Nov 11, 1924 00:00 |
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US-1515362-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone | |||
| Version 1 (current) | 1.27 MB | Shaun Ewing | Nov 11, 1924 00:00 | US-1515362-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone | ||||
| PDF File 1515361.pdf | 1.32 MB | Shaun Ewing | Nov 11, 1924 00:00 |
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US-1515361-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone | |||
| Version 1 (current) | 1.32 MB | Shaun Ewing | Nov 11, 1924 00:00 | US-1515361-A // Automatic telephone system // Powell Winfred T. // Stromberg Carlson Telephone | ||||
| PDF File 1515360.pdf | 784 kB | Shaun Ewing | Nov 11, 1924 00:00 |
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US-1515360-A // Automatic telephone repeater system // Powell Winfred T. // Stromberg Carlson Telephone | |||
| Version 1 (current) | 784 kB | Shaun Ewing | Nov 11, 1924 00:00 | US-1515360-A // Automatic telephone repeater system // Powell Winfred T. // Stromberg Carlson Telephone | ||||
| PDF File 1503923.pdf | 1.46 MB | Shaun Ewing | Aug 05, 1924 00:00 |
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US-1503923-A // Telephone switching system // Slough Frank M. // Stromberg Carlson Telephone | |||
| Version 1 (current) | 1.46 MB | Shaun Ewing | Aug 05, 1924 00:00 | US-1503923-A // Telephone switching system // Slough Frank M. // Stromberg Carlson Telephone | ||||
| PDF File 1503916.pdf | 1.08 MB | Shaun Ewing | Aug 05, 1924 00:00 |
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US-1503916-A // Metering arrangement for automatic telephone systems // Powell Winfred T. // Stromberg Carlson Telephone | |||
| Version 1 (current) | 1.08 MB | Shaun Ewing | Aug 05, 1924 00:00 | US-1503916-A // Metering arrangement for automatic telephone systems // Powell Winfred T. // Stromberg Carlson Telephone | ||||
| PDF File 1503908.pdf | 221 kB | Shaun Ewing | Aug 05, 1924 00:00 |
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US-1503908-A // Telephone head set // Manson Ray H. // Stromberg Carlson Telephone | |||
| Version 1 (current) | 221 kB | Shaun Ewing | Aug 05, 1924 00:00 | US-1503908-A // Telephone head set // Manson Ray H. // Stromberg Carlson Telephone | ||||
| PDF File 1502917.pdf | 1.85 MB | Shaun Ewing | Jul 29, 1924 00:00 |
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US-1502917-A // Interoffice trunking system // Powell Winfred T. // Stromberg Carlson Telephone | |||
| Version 1 (current) | 1.85 MB | Shaun Ewing | Jul 29, 1924 00:00 | US-1502917-A // Interoffice trunking system // Powell Winfred T. // Stromberg Carlson Telephone |
